/*!	 groupremovelayers.cpp
**	 Template File
**
**	Copyright (c) 2002-2005 Robert B. Quattlebaum Jr., Adrian Bentley
**	Copyright (c) 2007 Chris Moore
**
**	This package is free software; you can redistribute it and/or
**	modify it under the terms of the GNU General Public License as
**	published by the Free Software Foundation; either version 2 of
**	the License, or (at your option) any later version.
**
**	This package is distributed in the hope that it will be useful,
**	but WITHOUT ANY WARRANTY; without even the implied warranty of
**	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
**	General Public License for more details.
**
*/

#ifdef USING_PCH
#	include "pch.h"
#else
#ifdef HAVE_CONFIG_H
#	include <config.h>
#endif

#include <synfig/general.h>

#include "groupremovelayers.h"
#include <synfigapp/canvasinterface.h>

#include <synfigapp/localization.h>

#endif

using namespace std;
using namespace etl;
using namespace synfig;
using namespace synfigapp;
using namespace Action;

ACTION_INIT(Action::GroupRemoveLayers);
ACTION_SET_NAME(Action::GroupRemoveLayers, "GroupRemoveLayers");
ACTION_SET_LOCAL_NAME(Action::GroupRemoveLayers, N_("Remove Layers from a Set"));
ACTION_SET_TASK(Action::GroupRemoveLayers, "remove_from_group");
ACTION_SET_CATEGORY(Action::GroupRemoveLayers, Action::CATEGORY_LAYER | Action::CATEGORY_GROUP);
ACTION_SET_PRIORITY(Action::GroupRemoveLayers, 0);
ACTION_SET_VERSION(Action::GroupRemoveLayers, "0.0");
ACTION_SET_CVS_ID(Action::GroupRemoveLayers, "$Id$");

Action::GroupRemoveLayers::GroupRemoveLayers()
{
}

Action::ParamVocab
Action::GroupRemoveLayers::get_param_vocab()
{
    ParamVocab ret(Action::CanvasSpecific::get_param_vocab());

    ret.push_back(ParamDesc("layer", Param::TYPE_LAYER)
                  .set_local_name(_("Layer"))
                  .set_desc(_("Layer to be removed from Set"))
                  .set_supports_multiple()
                 );

    return ret;
}

bool
Action::GroupRemoveLayers::is_candidate(const ParamList &x)
{
    return candidate_check(get_param_vocab(), x);
}

bool
Action::GroupRemoveLayers::set_param(const synfig::String& name, const Action::Param &param)
{
    if (name == "layer" && param.get_type() == Param::TYPE_LAYER) {
        std::pair<synfig::Layer::Handle, String> layer_pair;
        layer_pair.first = param.get_layer();
        layer_list.push_back(layer_pair);

        return true;
    }

    return Action::CanvasSpecific::set_param(name, param);
}

bool
Action::GroupRemoveLayers::is_ready()const
{
    if (layer_list.empty()) {
        return false;
    }

    return Action::CanvasSpecific::is_ready();
}

void
Action::GroupRemoveLayers::perform()
{
    std::list<std::pair<synfig::Layer::Handle, String> >::iterator iter;

    for (iter = layer_list.begin(); iter != layer_list.end(); ++iter) {
        Layer::Handle layer(iter->first);
        layer->remove_from_group(iter->second = layer->get_group());
    }
}

void
Action::GroupRemoveLayers::undo()
{
    std::list<std::pair<synfig::Layer::Handle, String> >::iterator iter;

    for (iter = layer_list.begin(); iter != layer_list.end(); ++iter) {
        Layer::Handle layer(iter->first);

        layer->add_to_group(iter->second);
    }
}